Is winning games in MLB directly proportionate to team payrolls?

The average team payroll for the Yankees from 2002 to 2007 is $175 million per year, the Red Sox $118 million per year, and the Oakland A's $57 million per year. During this six year period the Yankees have won 497 games, the Red Sox 467 games, and the A's 471 games. As you look at these numbers do they... show more The average team payroll for the Yankees from 2002 to 2007 is $175 million per year, the Red Sox $118 million per year, and the Oakland A's $57 million per year. During this six year period the Yankees have won 497 games, the Red Sox 467 games, and the A's 471 games. As you look at these numbers do they tell you that team payroll is not a driving factor as to who will win, or does it tell you that Billy Beane is a much better GM than Brian Cashman or Theo Epstein?
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